Supporting structure for projecting apparatus.



E. SCHNEIDER.

SUPPORTING STRUCTURE FOR PROJBOTING APPARATUS.

APPLICATION FILED 00T.22, 1907.

1,104,834. Patented July 28, 1914,

2 SHEETS-SHEET 1.

THE NQRRIS PETERS CO. PHOTO-LITHO" WASHINGTON. D C.

E. SCHNEIDER.

SUPPORTING STRUCTURE FOR PROJEGTING APPARATUS. APPLICATION FILED 00'1.22, 1907.

1,104,834. Patented July 28, 1914.

2 SHHETS-SEEET 2.

WITNESSES /NVENTO/? A TTORNEY 'I'Hb. NORRIS PETERS CO PHO'rO-LITHQ. WASHINGTON. D C

EBERHARID SCHNEIDER, OF NEW YORK, N. Y.

SUPPORTING STRUCTURE FOR PROJEGT'ING APPARATUS.

Specification of Letters Patent.

PatentedJuly 28, 1914.

Application filed October 22, 1907. Serial No. 398,578.

To all whom it may concern:

Be it known that I, EBERHARD SCHNEIDER, a citizen of the United States, residing in the city, county, and State of New York, have invented anew and useful Improvement in Supporting Structures for Projecting Apparatus, of which the following is a specification.

This invention relates to supporting structures for projecting apparatus and particularly' to a supporting structure adapted for use with apparatus for projecting motion pictures and pictures of stationary objects.

The invention contemplates the provision of supporting apparatus characterized by great rigidity, compactness, and a wide range of adjustability, so that it may be readily adapted to the surfaces upon which it may be used.

The invention alsocontemplates the provision of a supporting structure provided with means for shifting the lamp-house laterally to adapt it for use with one set of proj ecting lenses and then with another.

The invention further contemplates the provision of a conveniently adjustable slide support or holder with an electric switch for controlling the lighting current mounted on the slide holder within convenient reach of the operators hand.

The invention has for its principal object the provision of a supporting structure for projecting apparatus having the characteristics above enumerated and other advantageous features of construction which will hereinafter appear.

In the accompanying drawings, in which corresponding parts are designated by similar characters of reference in the several views, I have illustrated a preferred form of the improved support-ing structure, but it is to be understood that changes fin the details of construction may be resorted to within the scope of the invention, which is hereinafter defined in the appended claim.

In the drawings: Figure 1 is a view in side elevation of the supporting structure and a portion of the lamp-house mounted thereon; Fig. 2 is a detail view in section of one of the joints by which the legs of the stand are secured to the bed; Fig. 3 isa detail view in elevation of one end of the bed with the leg shown in relation thereto, the stop for limiting the angular movement of the leg being shown; Fig. e is a transverse sectional view through the bed of the support, looking toward the rear and showing part of the lamphouse and the means for supporting it; Fig.

5 is a horizontal sectional view through a portion of the lamp-house in a plane above the bed of the supporting structure and showing the rear portion of the bed of the supporting structure and the, devices supported thereon.

Referring now to the drawings by the reference characters, 1 designates the bed of the stand, which is preferably an aluminum casting longitudinally slotted, as shown at 2, and provided with a stiffeningweb 3 on its under side. The stiffening web is made in skeleton form, as shown in Fig. 1, and at the ends openingst are formed for the passage of clamping bolts 5 by which the legs are secured. The web is in the general formof an inverted triangle, having a downward extension 3* at the apex, and projecting laterally from this extension is a pin 3" which is preferably threaded and is designed to afford support for a reel or magazine for the picture film used in exhibiting motion pictures. The surface of the web adjacent to each of the openings 4 is flat, but eachleg 6 is provided atits upper end with a disk 7 which is serrated on its inner face near the periphery, the serrations being provided to obtain firm hold upon a washer 8 of leather or other suitable material which is interposed between each leg and the web 8. The legs are preferably tubular in form and composed of a plurality of telescoping sections, as shown in Fig. 1, and the clamping bolt 5 for each pair of legs is preferably provided with a wing nut 9 to facilitate the operation of clamping orreleasing the legs. It is desirable to limit the angular adjustment of the legs to prevent the possibility of collapse of the stand in case the legs are set in nearly horizontal position. For this purpose, a notch '10 isformed in the lower margin of the web at each end adjacent to each of the bolt holes 4 and a stud 11 on the inner face of the disk 7 formed at the upper end of each of thelegs lies in the notch when the legs are clamped in place and engages. the end of the notch to limit the angular adjustment of the leg.

. Atthe rear of the bed alateral extension 12 is provided, asbest shown in Fig. 5, and upon this lateral extension I is clamped a bracket 13 presenting at the top a pair of ears 1a which afford support for a transverse rod 15 and having at the bottom an inclined bead or rib 16 which cooperates with the rod 15 toform a guide or track for the lamphouse'of the apparatus.

The lamp house 17 is supported by a pair of ears 18 which are pierced to receive the rod 15, and a roller 19 mounted in a small bracket 20 at the base of the lamp-house frame engages the inclined bead or rib 16 to diminish the friction of movement of the lamp-house over the bead or rib. To facilitate the lateral movement of the lamp-house lines in Fig. 4 to that shown in dotted lines,

and vice versa. To assist in rotating the rod 15 a small crank 23 is mounted on the end remote from the grooved portion, and to hold the rod a ainst sliding movement in the bearings afforded by the bracket 13 a thumb screw 24L is provided in the bracket 13 to engage with a circumferential groove formed in the rod adjacent to the crank 28. A pin 25 may be set transversely in the spirally-grooved portion of the rod 15 near the end, if desired, to form an additional stop for the lamp-house.

The slide support is illustrated in Fig. i and comprises a tray 26 formed of metal or other fire-proof material and preferably divided into two compartments, as indicated in Fig. 4. This tray is adjustably supported by means of a bracket 27 "comprising a bracket arm 28 having at one end a clamp 29 adapted to be mounted upon one of the legs the other end with a ball-and-socket joint 30, from the ball of which extends a stem or standard 31 upon the upper end of which the tray 26 is mounted. The socket of the ball-and-socket joint 30 is formed of two parts hinged together and connected by means of a clamp screw 32, so that the position of the stem or standard 31 may be accurately determined and then positively maintained by bringing the parts of the socket into clamping engagement with the ball.

The switch to control the lighting current is indicated at 33 and is mounted on the under side of the slide tray 26.

In the construction of the supporting structure above described I preferably em- 1 ploy practically nothing but fire-proof material, such as metal, vulcanite and asbestos. The only parts which can be affected by moderate degrees of heat, such as small fires, are the washers of leather or other suitable material placed between the disks at the j upper ends of the legs and the web to which they are clamped. The entire structure is,

therefore, free from danger in use and is use, the legs may be shortened by telescoping the sections, they may be detached from the bed and the lamp-house may be folded over on the bed so as to form a compact structure.

The lateral movement of the lamp-house for use in connection with the exhibition of moving pictures are mounted toward the forward end of the stand and are alined with one position of the lamp-house, while the lenses for exhibiting the pictures of stationary objects are alined with the other position of the lamp-house, thus making the shifting of the lamp-house from one position to another the only change in position of parts of the apparatus required to change from one type of exhibition to the other.

The adjustable bracket 27 and slide tray 26 afford means whereby every operator may support his slides within convenient reach, and the ball-and-socket joint permits the adjustment of the position of the slide tray to any angle that the operator finds convenient.

Havmg thus described my invention, what I claim as new and desire to secure by Letters Patent, .is: of the supporting structure and provided at In a supporting structure of the character described the combination of the bed of a stand having an extension with a guide on the outer lower end thereof, a bracket hav- 1 ing a pair of ears clamped to said extension, a rod having a groove supported in said ears,

means connected with one of said ears to 1 allow the rotation of said rod and prevent its movement in the direction of its longitudinal axis, means to rotate the rod, a lamp house having a pair of pierced ears, the said ears supported on the said rod, a screw pin supported in one of the ears of the lamp house and registering with the groove of said rod, a bracket at the base of the lamp house, a roller journaled in the latter bracket bearing against the guide of said extension.

In testimony whereof, I have signed my name in the presence of two witnesses.

EBERHARD SCHNEIDER.

Witnesses:

BAXTER MORTON, FRED. H. PARKS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0. 

